I have used Automotive touch up products on three cars. I also recently purchased cans from a local Finishmaster outlet. A pint of paint made three aerosol cans for about the same price as the AT price.

I like the catalyzed clear AT sells and it is very price competetive. Can is only good for two days, but provides a good factory equivalent. You can wet sand it and buff to get a good smooth finish. I am doing my 92 right now and in the sanding/buffing stage.

You can buy the empty 'can' unit and put whatever liquid paint you want to. However, why limit yourself if you're going custom color? I can see using Krylon, over-the-counter, etc. (which can be done quite well if you know what you're doing), but think it'd be better to either use a real spray gun, or even an airbrush could work well, if concerned about space, small compressor, etc...Use an inline separator-dryer on the line, of course.

My local parts store has a pPg shop attached, and they made me some cans of kensington grey, wasn't terribly expensive. Sadly I haven't gotten around to it yet, so my eterna grille is still on a shelf.

If its a custom color you'll probably have to take one of the wheels to a place that sells autobody paint and have them scan it. Even then I don't know that you'll get an exact match. When painting a car, say one door that has damage for instance. Most of the time you have to blend into the next panel or panels to trick the eye because its never a 100& perfect match. If you blend it over a broad area the eye really doesn't see it. You paint just the door though and most of the time it'll stick out and be very noticeable. I think this is what you will run into with the center caps. One is paint and one is powder, they won't be 100% identical. Hopefully it will though.

Also, while this is a small part, it's always a good idea to paint things in the position they will be used, so in this case, vertically. Works with direction polishing and especially waxing too, if you *really* want things to stand out (or match better on the paint).

Sounds like the PC may have just been done? That will help, since the UV and elements have not gotten to it.

They claim those computer sensors are supposed to work good in matching existing shades/fade, etc., although far from perfect.

Keep in mind different materials will not always come out the same, especially if they're plastic.